William cooke



(No Model.) W COOKE AUTOMATIC GOVERNOR.

Patented "Ma j `WILLIAM coorte, or oXToN, ENGLAND.

trice.

AUTOMATIC GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 519,322, dated May 8,1894. Application iiled July 11,1893. Serial No. 480,190. (No model.)`Patented in England May 51 18921N0- 5:525-

To @ZZ whom it may concern: j

` Be it known that I, WILLIAM COOKE, asubject of the Queen of GreatBritain and Ireland, residing at Storeton Road, Oxton, in the county ofChester, England, have invented a certain new and useful AutomaticGovernor, (forwhich I have obtained Letters Patent in Great Britain, No.8,526, dated May 5, 1892,) of which the following is a specification.

The objects of my invention are to economize steam, and to preventracing and consequent damage to the steam motor or motors to which theymay be applied.

Referring to the drawings which form a part of this speciiication Figure1 is a front elevation of an automatic governor made according to myinvention suitable for Winches having steam cylinders about seven inchesin diameter. Fig. 2 is a front sectional elevation of Figs. l and 4taken through the line A-B of Fig. 4. Fig. 3 is a side sectionalelevation of the body or lower portion of the casing of the governortaken through the line C--D on Fig. l. Fig. 4 is a plan view of Figi.

The above figures are drawn about onethird of their full size, andsimilar letters indicate similar parts throughout the several views.

The metallic casing a I make with an inlet h, by the liange c of whichthe said casing a is connected to a steam boiler or generator by meansof suitable piping, the outlet ways d also being connected by suitablepiping to the valve chests of an adjacent winch or other steam motor. jj

The metallic `valve e2 having a curved or spherical faceis shown on thedrawings hereunto annexed at Figs. 2 and 3 formed in one with the hollowpiston e. I would have it understood that the said piston and valve maybe made separately and connected or joined together by any suitablemeans, the said valve e? being retained on its seating e3 by a metallicspring f, the lower end of which spring abuts upon the upper or flangedend g2 of a metallic sleeve g, the upper end of the said spring fbearing against the under side of a metallic cap or block h. The lowerpart of a screwed metallic bolt z' which passes through a metallic nutj,and through the up per part a3 of the metalliccover a2 bearing l againstthe top side ot' the said block h, the

head and upper portionof the said bolt being covered or inclosed by asuitably shaped metallic cover 7e screwed `on to the upper threadedportion of the cover a2, a metallic plug cook or tap Z `having asuitably shaped orifice or steam-way m formed through same, beingretained on its seating by means of a suitable metallic stuffing-box n,gland o, and bolts and nuts p, a metallic handle or lever 192 ofsuitable shape and sizebeing fitted or fixed on the outer end of theplug Z to facilitate the opening and closing of the said cock or tap.

`When such governors are fitted or connected by suitable means toWinches, donkeypumps or other motors, steam when admitted through 'theaperture m in cock l iiow through an adjustable passage or by-pass rwhich must be regulated by the plug or bolt q according to the pressureof steam so as to admit or pass a sufficient quantity to drive the winchor motor without load. When a load is applied to such motors, the speedof the motor will be somewhat checked, thus causing an accumulation ofsteam on the un- `der side of the piston c, which together with thepressure on the valve e2 will overcome the resiliency of the spring f,by thisl means steam will be admitted in sufficient quantity to themotor without materially increasing or diminishing the initial speed ofthe motor. The cap a? having asuitable outlet a4 for permitting the`escape of the steam which may have passed into the cap a? from theunder side of the piston ebetween the external pe-` riphery of the saidpiston and the internal periphery of the casing d. By removing the coverZr from the top part of the covero` the bolt c' may be turned by anysuitable means in either direction so as to increase or diminish thetension of the spring f and thus compensate for varying steam pressures.The said cover K may be fitted or provided with any suitable lockingdevice, so as to prevent un-authorized persons tampering with the saidbolt i.

By stopping up ,either of the outlets cl of governors made as hereindescribed and illustrated on the drawings hereunto annexed, suchgovernors may be used for Winches, donkey-pumps or other steam-motorshaving only roo one cylinder, or such governors may be constructed withone outlet only, in such cases the steam inlet may be at right angleswith the steam outlet, or such governors may be constructed with asteaminlet in line with a steam outlet and at right angles or at about rightangles with the body of the governor, the steam being admitted andcontrolled by means of a cock or tap as shown on the drawings, by avalve or other suitable appliance.

The improved automaticgovernors hereinbefore described for use incontrolling the speed of steam-Winches, donkey-pumps and other steammotors I make ot any suitable metals or metallic alloys, but Ipreferably make them throughout of gun-metal.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. In an automatic steam governor, a casing having inlet and dischargeports and a valve seat between the same, a spring pressed valve havingfaces of dii't'erent areas, with one of said faces fitting the valveseat, and a by pass connecting the inlet with the outlet contractedvalve closing the inlet port, a by pass admitting steam from the inletport against said annular steam face, a metallic cover closing the upperend of the cylindrical portion, a screw passing through the samecarrying a block h, a spring extending beltween the block and valve, anda cap upon the cover covering the upper end of the screw, substantiallyas described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

WILLIAM COOKE; Witnesses:

W. J. SULIs, WM. PIERCE.

